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40664.210982
The interpretation of quantum measurements presents a fundamental challenge in quantum mechanics, with concepts such as the Copenhagen Interpretation (CI), Many-Worlds Interpretation (MWI), and Bohmian Mechanics (BM) offering distinct perspectives. We propose the Branched Hilbert Subspace Interpretation (BHSI), which describes measurement as branching the local Hilbert space of a system into parallel subspaces. We formalize the mathematical framework of BHSI using branching and the engaging and disengaging unitary operators to relationally and causally update the states of observers. Unlike the MWI, BHSI avoids the ontological proliferation of worlds and copies of observers, realizing the Born rule based on branch weights. Unlike the CI, BHSI retains the essential features of the MWI: unitary evolution and no wavefunction collapse. Unlike the BM, BHSI does not depend on a nonlocal structure, which may conflict with relativity. We apply BHSI to examples such as the double-slit experiment, the Bell test, Wigner and his friend, and the black hole information paradox. In addition, we explore whether recohering branches can be achieved in BHSI. Compared to the CI and MWI, BHSI provides a minimalist, unitarity-preserving, collapse-free, and probabilistically inherent alternative interpretation of quantum measurements.
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40685.211079
Recent results have shown that singularities can be avoided from the general relativistic standpoint in Lorentzian-Euclidean black holes by means of the transition from a Lorentzian to an Euclidean region where time loses its physical meaning and becomes imaginary. This dynamical mechanism, dubbed “atemporality”, prevents the emergence of black hole singularities and the violation of conservation laws. In this paper, the notion of atemporality together with a detailed discussion of its implications is presented from a philosophical perspective. The main result consists in showing that atemporality is naturally related to conservation laws.
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40765.211098
This paper aims to offer an alternative account for understanding scientific models based on metaphors. To accomplish this, we analyze Darwin’s use of metaphors, such as the notion of powerful Being and Struggle for Existence, in order to represent part of the process taking place in natural selection. The proposal emerges from two provocative issues. First, that the use of metaphors in philosophical and scientific literature is a form of approach that together with other “linguistic tropes in science dies hard” (Bailer-Jones 2002a; Keller 2002, p.117). Second, there are still unsolved problems in the literature of scientific models and debates using metaphors in science as the main epistemological approach.
-
98448.211109
Marletto and Vedral [Phys. Rev. Lett. 125, 040401 (2020)] propose that the Aharonov-Bohm (AB) phase is locally mediated by entanglement between a charged particle and the quantized electromagnetic field, asserting gauge independence for non-closed paths. Using quantum electrodynamics (QED), we critically analyze their model and demonstrate that the AB phase arises from the interaction with the vector potential A, not from entanglement, which is merely a byproduct of the QED framework. We show that their field-based energy formulation, intended to reflect local electromagnetic interactions, is mathematically flawed due to an incorrect prefactor and involves fields inside the solenoid, failing to support local mediation of the phase. Its equivalence to qv · A holds only in the Coulomb gauge, undermining their claim of a gauge-independent local mechanism. Furthermore, we confirm that the AB phase is gauge-dependent for non-closed paths, contradicting their assertion. Our analysis reaffirms the semi-classical interpretation, where the AB phase is driven by the vector potential A, with entanglement playing no causal role in its generation.
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98534.211132
This paper aims to resolve the incompatibility between two extant gauge-invariant accounts of the Abelian Higgs mechanism: the first account uses global gauge symmetry breaking, and the second eliminates spontaneous symmetry breaking entirely. We resolve this incompatibility by using the constrained Hamiltonian formalism in symplectic geometry. First we argue that, unlike their local counterparts, global gauge symmetries are physical. The symmetries that are spontaneously broken by the Higgs mechanism are then the global ones. Second, we explain how the dressing field method singles out the Coulomb gauge as a preferred gauge for a gauge-invariant account of the Abelian Higgs mechanism. Based on the existence of this group of global gauge symmetries that are physical, we resolve the incompatibility between the two accounts by arguing that the correct way to carry out the second method is to eliminate only the redundant gauge symmetries, i.e. those local gauge symmetries which are not global. We extend our analysis to quantum field theory, where we show that the Abelian Higgs mechanism can be understood as spontaneous global U(1) symmetry breaking in the C -algebraic sense.
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184306.211144
[Editor’s Note: The following new entry by Klaas Kraay replaces the
former entry on this topic by the previous author.]
The topic of divine freedom concerns the extent to which a divine
being — in particular, the supreme divine being, God — can
be free. There are, of course, many different conceptions of who or
what God is. This entry will focus on one enormously important and
influential model, according to which God is a personal being who
exists necessarily, who is essentially omnipotent, omniscient,
perfectly good, and perfectly rational, and who is the creator and
sustainer of all that contingently
exists.[ 1 ]
(For more discussion of these attributes, see the entries on
omnipotence,
omniscience,
perfect goodness,
and
creation and conservation.)
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299635.211153
Given the extreme importance that Wittgenstein attached to the
aesthetic dimension of life, it is in one sense surprising that he
wrote so little on the subject. It is true that we have the notes
assembled from his lectures on aesthetics given to a small group of
students in private rooms in Cambridge in the summer of 1938
(Wittgenstein 1966, henceforth LA) and we have G. E. Moore’s
record of some of Wittgenstein’s lectures in the period
1930–33 (Moore 1972). Of Wittgenstein’s own writings, we
find remarks on literature, poetry, architecture, the visual arts, and
especially music and the philosophy of culture more broadly scattered
throughout his writings on the philosophies of language, mind,
mathematics, and philosophical method, as well as in his more personal
notebooks; a number of these are collected in Culture and
Value (Wittgenstein 1980a).
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386833.211162
Philosophers interested in medicine and healthcare research should focus on the choice of health concepts. Conceptual choice is akin to conceptual engineering but, in addition to assessing whether a concept suits an objective, or offering a better one, it evaluates objectives, ranks them, and discusses stakeholders’ entitlement. To show the importance of choosing health concepts, I summarize the internal debate in medicine, showcasing definitions, constructs, and scales. To argue it is a philosophical task, I analyze the medical controversy over health as adaptation and self-management. I conclude with a to-do list of conceptual choice tasks, generalizable beyond medicine.
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386853.21117
Since Andrew Jameton first introduced the concept of moral distress, a growing theoretical literature has attempted to identify its distinctive features. This theoretical work has overlooked a central feature of morally distressing situations: disempowerment. My aim is to correct this neglect by arguing for a new test for theories of moral distress. I call this the disempowerment requirement: a theory of moral distress ought to accommodate the disempowerment of morally distressing situations. I argue for the disempowerment requirement and illustrate how to apply it by showing that recent responsibility-based theories of moral distress fail to pass the test.
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391093.211179
I wrote these words about 20 years ago. They seem especially apt these days. Leaders have been known to inspire blind faith. Michels (1962: 93) refers to "the belief so frequent among the people that their leaders belong to a higher order of humanity than themselves" evidenced by "the tone of veneration in which the idol's name is pronounced, the perfect docility with which the least of his signs is obeyed, and the indignation which is aroused by any critical attack on his personality." …
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530304.211187
Chinese Daoism is a Chinese philosophy of natural practice structured
around a normative focus on dào (道 path, way). This naturalist philosophical project treated dào as a
structure of natural possibility for living beings. Unlike similar
Western naturalisms, e.g., pragmatism, Daoism’s foil was
contemporary: the Confucian-Mohist (Ru-Mo) dialectic about
human (人 rén human, social)
dào. Daoism’s critique of Ru-Mo debate
concerns the role of natural (天 tiān
sky-nature) dào vs human dào (socially
constructed guidance). Daoism’s founding
personages[ 1 ]
( Laozi and
Zhuangzi)
did not coin their “-ism.” The two Classical texts,
credited to their titled masters (子 zǐ
son), emerged during the Classical period (5th to
3rd C. BC).
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559809.211195
In this paper, we investigate the treatment of the direction of time in Bohmian mechanics. We show how Bohmian mechanics can account for the direction of time in different ways. In particular, we argue that Bohmian mechanics can be employed to accommodate reductionism, because there always is an asymmetry in the initial conditions when forward and backward evolutions of the configuration of matter are compared. It can also be employed to accommodate primitivism and relationalism due to the fact that Bohmian mechanics is a first order theory that recognizes only position as a primitive physical magnitude. We show how this fact can be employed to support a primitive direction of time by assuming Leibnizian relationalism, which reduces the direction of time to change in the configuration of matter with that change being directed as a primitive matter of fact.
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559836.211204
The capacity for purposeful choice among genuine alternatives—commonly termed free will— presents a profound challenge to a scientific worldview often perceived as deterministic. Understanding how seemingly goal-directed actions, observed across the spectrum of life from bacteria navigating chemical gradients (chemotaxis) to humans deliberating complex decisions, can arise from underlying physical and chemical processes is a central question in both philosophy and science. This paper explores the possibility of naturalizing free will by conceptualizing it as emergent autonomy: a capacity rooted in the unique organization of life itself, an organization that unfolds dynamically in real, lived time (Mascolo & Kallio, 2019; Moore, 2023). Foundational work by thinkers like Kauffman & Clayton (2006) on emergence and organization provides crucial groundwork for such an approach.
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564021.211213
Causal Finitism—the thesis that nothing can have an infinite causal history—implies that there is a first cause, and our best hypothesis for what a first cause would be is God. Thus:
- If Causal Finitism is true, God exists. …
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595229.211236
A nameless delivery boy in a nameless city, a refugee from a nameless country, fleeing a nameless Strongman, indentured to a nameless Supervisor, dispatched to nameless customers with unmarked packages, not knowing, yet, the rules of the system, and the language, in which he is trapped—a story told, though we do not know it yet, by a nameless narrator in a nameless city, a refugee from a nameless country, fleeing a nameless Strongman. …
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617581.21125
This is an introduction to a collection of articles on the conceptual history of epigenesis, from Aristotle to Harvey, Cavendish, Kant and Erasmus Darwin, moving into nineteenth-century biology with Wolff, Blumenbach and His, and onto the twentieth century and current issues, with Waddington and epigenetics. The purpose of the topical collection is to emphasize how epigenesis marks the point of intersection of a theory of biological development and a (philosophical) theory of active matter. We also wish to show that the concept of epigenesis existed prior to biological theorization and that it continues to permeate thinking about development in recent biological debates.
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781724.211264
Maribel Barroso suggests exploration of an interesting avenue for inductive inference. The material theory, as I have formulated it, takes as its elements propositions that assert scientific facts. Relations of inductive support among them assess their truth or falsity. She proposes that we should take models as the elements instead of proposition. In favor of this proposal is that models have a pervasive presence in science. We should be able to confront them with evidence in a systematic way. Reconfiguring inductive inference as relations over models faces some interesting questions. Just what is it for models to be supported inductively? Can the material theory be adapted to this new case? In works cited in her review, Barroso has already begun the study of inductive relations among models in science, using insights from Whewell’s work. She is, it seems to me, well placed to seek answers to these questions. I wish her well in her continuing efforts.
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783946.211276
‘Structural hylemorphism’ holds that the concept of structure should replace the allegedly less explanatory concept of form. Adherents do not, however, give us a precise idea of what structure is meant to be, and on analysis it is difficult to know how to define it as a replacement for form. I compare and contrast classical and structural hylemorphism. I rehearse the ‘content-fixing problem’ for structuralism about form, then set out the ‘qualitative problem’. These seem insurmountable obstacles to a viable version of structural hylemorphism. Exploration of the relation between quantity and quality shows that classical form can never be reduced to/replaced by a quantitative concept of form. In the end, structure does not capture what metaphysics requires. More radically, I suggest that there is no clear concept of what structure is. Classical hylemorphism, by contrast, gives us form in full metaphysical technicolor—adequate both for science and for fundamental metaphysics.
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790533.211287
The nodes of the ‘geometric trinity’ are: (i) general relativity (in which gravitational effects are a manifestation of spacetime curvature), (ii) the ‘teleparallel equivalent’ of general relativity (which trades spacetime curvature for torsion), and (iii) the ‘symmetric teleparallel equivalent’ of general relativity (which trades spacetime curvature for non-metricity). One popular reformulation of (iii) is ‘coincident general relativity’, but this theory has yet to receive any philosophical attention. This article aims both to introduce philosophers to coincident general relativity, and to undertake a detailed assessment of its features.
-
790568.211295
How to make sense of the notion of force-free motion which seems to be presupposed by Newton’s first law? One can identify in the literature various different answers to this question, one among which is to be found in the writings of Torretti (1983). In a wonderful recent article, however, Hoek (2023) has proposed a radical revision to our understanding of Newton’s first law, motivated on both exegetical and philosophical grounds. In light of this, one is left wondering whether this reconceptualisation of the content of Newton’s first law obviates the need to provide a notion of force-free motion with which to undergird it. In this note, I’ll argue that this is not the case: one can (and should!) endorse Hoek’s understanding of the first law, while nevertheless seeking to define force-free motions in one of the various ways which have been proposed in the literature.
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790586.211303
We consider the distinction between ‘qualified’ and ‘unqualified’ approaches introduced by Read (2020a) in the context of the dynamical/geometrical debate. We show that one fruitful way in which to understand this distinction is in terms of what one takes the kinematically possible models of a given theory to represent; moreover, we show that the qualified/unqualified distinction is applicable not only to the geometrical approach (which is the case considered by Read (2020a)), but also to the dynamical approach. Finally, having made these points, we connect them to other discussions of representation and of explanation in this corner of the literature.
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843487.211311
I’m on holidays this week, spending some time in Cracow (Poland) and Slovakia. Today’s post is a bit off-topic compared to what I’m used to publish here, but still I hope you will enjoy it! If not the case already, do not hesitate to subscribe to receive for free essays on economics, philosophy, and liberal politics in your mailbox! …
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963730.21132
While the problem of the philosophical significance of Riemann's theorem on conditionally convergent series has been discussed in detail for some time, specific versions of it have appeared in the literature very recently, over which there have been widespread disagreements. I argue that such discrepancies can be clarified by introducing a rather conventional type of composition rule for the treatment of some infinite systems (as well as supertasks) while analysing and clarifying the role of the concept of continuity by stripping it of the excesses that its application by the Leibnizian tradition has led to. The conclusion reached is that the indeterminacy associated with conditional convergence has a clear philosophical significance, but no fundamental ontological significance. Keywords: Conditional Convergence; Continuity; Expansionist Analysis; Balance Principle; Ross Paradox.
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1013152.211328
The View from Everywhere is now available for those with an Oxford Scholarship Online subscription; hardcopies ship next month (but you can preorder now). I’ll probably write more about it as the print publication date approaches. …
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1251996.211336
The philosophy of chemistry began to develop in earnest in the mid 1990s following the efforts of a number of individuals who were initially working and publishing independently, before joining together to form the International Society for the Philosophy of Chemistry (ISPC). Of course, some isolated authors had already stressed the philosophical aspects of chemistry and the need for such a sub-discipline (van Brakel and Vermeeren 1981). However, the International Encyclopedia of Unified Science of logical empiricism had a volume of many disciplines but nothing on chemistry since it was considered to be reduced field.
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1309651.211346
Michael Redhead FBA was the most distinguished and influential British philosopher of physics of the second half of the 20th century. After a degree in physics (1950) and some fifteen years running his family’s business, he undertook a doctorate in physics (completed 1970) and thereafter became a philosopher of science, especially physics. He rose rapidly through the academic ranks at the University of London, and was Professor at University of Cambridge from 1987 to 1997, when he returned to the London School of Economics. Through his writings, his teaching and his academic leadership, he was the pre-eminent influence, from about 1980 onwards, in establishing the philosophy of physics as a discipline in the United Kingdom.
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1309704.211355
The frequency of major theory change in natural science is rapidly decreasing. Sprenger and Hartmann (2019) claim that this observation can improve the justificatory basis of scientific realism, by way of what can be called a stability argument. By enriching the conceptual basis of Sprenger and Hartmann’s argument, this paper shows that stability arguments pose a strong and novel challenge to scientific anti-realists. However, an anti-realist response to this challenge is also proposed. The resulting dialectic establishes a level of meaningful disagreement about the significance of stability arguments for scientific realism, and indicates how the disagreement can ultimately be resolved.
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1362471.211366
In a recent essay, I explained that the right to exit is often given great importance in liberal thought. In some cases, it is almost as if nothing else matters than the guarantee that individuals can —in principle or effectively— exit a group, a community, or a society. …
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1406914.211384
Karl Marx rejected the ideal of equality as bourgeois. And yet, the most significant attempt in recent years to distinguish socialist theory from liberal egalitarian theory, G.A. Cohen's critique of John Rawls, relies almost entirely on an egalitarian principle. Although Cohen’s critique often seems to have a great deal of intuitive force, a number of Rawls’ defenders have argued, quite convincingly, that Cohen’s critique is unsuccessful. For those of us attracted to broadly socialist ideals, there does seem to be something importantly right about Cohen’s criticisms of Rawls, and more substantively, something deeply problematic in the kinds of market-based leveraging of productive abilities that would be permitted in a fully just Rawlsian society. My diagnosis is that Cohen has the right target, but the wrong fundamental value. I develop an alternative to these liberal egalitarian approaches in contemporary socialist ethics, building on the famous slogan: ‘from each according to their abilities, to each according to their needs.’ This alternative ideal of Caring Solidarity draws on rich socialist, Christian, and feminist traditions, and emphasizes the importance of care, recognition, and solidarity in political and economic organisation. This alternative approach leaves a certain amount of inequality legitimately in place, whilst providing a moral framework for a radical reorganisation of production.
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1482675.211403
Quantum mechanics and general relativity require unied theoretical treatment, particularly regarding the cosmological constant's observed value (≈ 10−123 in Planck units). This paper presents the Minimal Causal-Informational Model of Emergent Space-Time (MCIMES), which establishes quantum information as the fundamental entity underlying emergent space-time geometry. The model adopts quantum structural realism as its interpretive framework, implemented through rigorous category theory formalism. MCIMES is mathematically constructed on an abstract interaction graph, represented as a monoidal category CA with functorial mappings to physical observables. The system's dynamics are governed by a variational principle of minimal information loss, expressible through natural transformations between functors. The framework demonstrates how metric properties, Lorentzian signature, and causal structure emerge from quantum correlations without presupposing space-time. Topological invariants, particularly Betti numbers bp of the interaction graph, play a crucial role in quantifying universal properties of space-time uctuations and thermodynamic behavior. From this background-independent formulation, Einstein's equations emerge in the continuum limit as the optimal conguration that minimizes information loss.